配置文件
//注解类
@Configuration
public class Config {
//初始化提示和销毁提示 one :通过实现接口方法
@Bean
public Cat createCat(){
return new Cat();
}
//初始化提示和销毁提示 two :通过对bean对象进行注解的方式
@Bean(initMethod ="init", destroyMethod = "destroy")
public Dog createDog(){
return new Dog();
}
//初始化提示和销毁提示 three : 通过对原对象进行注解的方式
@Bean
public Apple createApple(){
return new Apple();
}
}
one
//实现InitializingBean, DisposableBean 接口
public class Cat implements InitializingBean, DisposableBean {
//初始化
@Override
public void afterPropertiesSet() throws Exception {
System.out.println("--------afterPropertiesSet one--------");
}
//销毁
@Override
public void destroy() throws Exception {
System.out.println("--------destroy one--------");
}
}
two
public class Dog {
public void init() {
System.out.println("--------afterPropertiesSet two--------");
}
public void destroy() {
System.out.println("--------destroy two--------");
}
}
three
public class Apple {
//初始化注解
@PostConstruct
public void start(){
System.out.println("--------afterPropertiesSet three--------");
}
//销毁注解
@PreDestroy
public void end(){
System.out.println("--------destroy three--------");
}
}
系统调用:
public class Main {
public static void main(String[] args){
AnnotationConfigApplicationContext context =new AnnotationConfigApplicationContext(Config.class);
System.out.println(context.getBean(Cat.class));
System.out.println(context.getBean(Dog.class));
System.out.println(context.getBean(Apple.class));
context.close();
}
}
运行截图:
简做总结和分享,如有不足欢迎指出交流!